I probably won't bother doing ward-level maps of three of these (Christian, Buddhist, Other) for a couple of reasons. At least not for a while. Ditto some others in some areas; not much point doing Sikhs in North London for example.

As for colours, some were obvious, some made sense after thinking about things for a little (Christian for example; thinking of the Last Supper and so on) some were more random.

Oh, yes... one other thing. It's likely that the Jewish pattern is a little misleading in areas with a lot of Secular Jews (and West London isn't one of those areas; I'd intended to add this note with the previous set of maps but forgot) for obvious reasons.